Migrating nRF52840 to nRF52833

Hello,

Are you able to debug the application to see if the program hangs or crashes? It should generally be fairly straight forward port FW from the 52840 to 52833. The most important step is probably to remember to include the correct startup files and update the linker settings to reflect the new memory address ranges.

The relevant startup files are:

$(SDK_ROOT)/modules/nrfx/mdk/gcc_startup_nrf52833.S

$(SDK_ROOT)/modules/nrfx/mdk/system_nrf52833.c

Also remember to replace the preprocessor flag "NRF52840_XXAA" with NRF52833_XXAA in your makefile.

Now, I have been able to program my DK by adding the dependencies of the nRF52833 in my SDK. 

Did you update the MDK files in  /nRF5_SDK_15.0.0_a53641a/modules/nrfx/mdk/ with files with one of the more recent MDK releases here: https://www.nordicsemi.com/Products/Development-tools/nRF-MDK?

Best regards,

Vidar

Hi Vidar,

I couldn't reply to your last message so I replied here, I read the regs and got this:

Seems like the faulty IRQ is the 0 which is POWER_CLOCK. Any hint on what could cause that ?

Thanks,

Joel V.

Hi Vidar,

I couldn't reply to your last message so I replied here, I read the regs and got this:

Seems like the faulty IRQ is the 0 which is POWER_CLOCK. Any hint on what could cause that ?

Thanks,

Joel V.

Hi Joel,

Do you have a power/clock interrupt handler in your application defined under a different name? I.e. something else than 'POWER_CLOCK_IRQHandler'

In our examples, it is redefined to nrfx_power_clock_irq_handler:

I guess you must have some redefine too that is not included now when you build with -DNRF52833_XXAA.

Hi Vidar,

I am not redefining any IRQ handler in my application. Could it be a library I use that have this redefinement ? There is one script I couldn't compile  because of an error with nrf_power.h and I decided to let it down because I don't need the usb in my application and the script was about USB. This is the error :

Hope it helps,

Joel V.

Hi Joel,

Actually, the problem is probably that 'POWER_CLOCK_IRQHandler' is *not* being redefined. Assuming you use the SDK drivers, you need the nrfx_irqs_nrf52833.h (this line) to connect POWER_CLOCK_IRQHandler to the nrfx_power_clock_irq_handler()  in nrfx_power_clock.c.

Please make sure the your nrfx_irqs.h file includes the following line: https://github.com/NordicSemiconductor/nrfx/blob/1aa7824f45d46b5f81250801868bef050ba72440/soc/nrfx_irqs.h#L47 and that nrfx_irqs_nrf52833.h is in your include path.

Best regards,

Vidar

Hi Vidar,

The nrfx_irqs_nrf52833.h path is included and the following line is written

https://github.com/NordicSemiconductor/nrfx/blob/1aa7824f45d46b5f81250801868bef050ba72440/soc/nrfx_irqs.h#L47

I have tried multiple configurations and there is still those 2 variables that are undefined in my system:

NRFX_POWER_CONFIG_DEFAULT_DCDCEN and NRFX_POWER_CONFIG_DEFAULT_DCDCENHV

Thanks,

Joel V.

Hi Joel,

I realize now that there must be more files needing to be patched to get 52833 support in SDK 15.0.0, so it might be easier to just update the entire nrfx directory.

Have you tried to see if your project compiles against the latest nrfx 1.x release?  I don't believe there should be any breaking changes as long as you stay on the 1.x branch.

Joel V said:

NRFX_POWER_CONFIG_DEFAULT_DCDCEN and NRFX_POWER_CONFIG_DEFAULT_DCDCENHV

I need to look more into this later.  Unlike the 52840, the 52833 does not have a high voltage DCDC regulator, so it kind of makes sense that the last symbol is undefined here.

Best regards,

Vidar